quietly today, chief justice john roberts administering the oath of office in a private ceremony. the first lady holding her grandmother's bible. all around washington tonight, there's a growing buzz in the air as they get ready. the u.s. marine band rehearsing on the capital steps a short time ago and where the president will deliver his inaugural address tomorrow. authorities are expecting 800,000 people to gather here, a massive number for a prt ushering in a second term. we begin with the quiet ceremony at the white house and her chief white house correspondent jonathan karl. >> it was short and sweet. just 42 words. >> so help me god. >> reporter: with that, the seconds term begins. last time around chief justice ron erts flubbed the words. this time he took notes. tomorrow, president obama will tie a record, tarking the oath for the fourth time. there was a flubbed one four years ago, a redo the next day. today's official oath required by the constitution to be done before noon on january 20th and the ceremonial one tomorrow before his inaugural speech. many oaths since fdr,